Structured lipids enriched with unsaturated fatty acids produced by enzymatic acidolysis of silkworm pupae oil using oleic acid

文献类型: 外文期刊

第一作者: Zhao, Xing-Yu

作者: Zhao, Xing-Yu;Wang, Xu-Dong;Liu, Xi;Zhu, Wei-Jie;Mei, Yi-Yuan;Li, Wen-Wen;Wang, Jun;Wang, Jun

作者机构:

关键词: -Linolenic acid;Biocatalysis;Polyunsaturated fatty acids;Silkworm pupae oil;Structured lipid;Triacylglycerols

期刊名称:EUROPEAN JOURNAL OF LIPID SCIENCE AND TECHNOLOGY ( 影响因子:2.679; 五年影响因子:2.627 )

ISSN:

年卷期:

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收录情况: SCI

摘要: Desilked silkworm (Bombyx mori L.) pupae oil has been identified as a valuable source of unsaturated fatty acids (UFAs). However, direct consumption is a food safety issue due to the presence of sn-1,3 triacylglycerols (TAGs), including palmitic acid (PA). A simple, selective and safe conversion to structured triacylglycerols (STAGs) with high UFA content is highly desirable. Novel STAGs with low PA and high -linolenic acid (ALA), oleic acid (OA) and linoleic acid (LA) content were synthesized from silkworm pupae oil using a solvent-free system catalyzed by Lipozyme RM IM. Crystallization and melting profiles were determined using thermograms, and optimal conditions involved an enzyme load of 7%, a silkworm pupae oil TAG to OA molar ratio of 1:5, and a reaction temperature of 60 degrees C. The content of PA and stearic acid decreased from 41.04 to 20.11%, while UFAs increased from 61.12 to 77.88%. The STAGs exhibited lower crystallization (-15.44 degrees C) and melting (-23.47 degrees C) profiles than TAGs (4.64 and -5.58 degrees C, respectively).

分类号: TQ645`TS22

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